<template>
<!-- 头部区域 -->
    <el-container class="home-container">
  <el-header>
      <div>
      <img src="../assets/heima.png" alt="">
      <span>后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
  </el-header>
  <!-- 页面主体区域 -->
  <el-container>
      <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">
            |||
        </div>
        <!-- 侧边栏菜单区域 -->
         <el-menu
      background-color="#333743"
      text-color="#fff"
      active-text-color="#409EFF" unique-opened :collapse="isCollapse" :router="true" default-active="activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
          <!-- 一级菜单栏模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <el-menu-item :index="'/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+ subItem.path)"> 
            <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
            </template>
        </el-menu-item>
      </el-submenu>
      
    </el-menu>
    
    
    
    </el-aside>
    <!-- 右侧内容 -->
    <el-main>
        <!-- 路由占位符 -->
        <router-view>

        </router-view>
    </el-main>
  </el-container>
</el-container>
</template>

<script>
export default {
    data(){
        return {
            menulist:[

            ],
            iconsObj:{
                '125':'iconfont icon-user',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            // 是否折叠
            isCollapse:false,
            //被激活的链接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
        logout(){
            window.sessionStorage.clear();
            this.$router.push("./login");
        },
        //获取所有的菜单
       async getMenuList(){
          const{data:res} = await this.$http.get('menus')
          if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
          this.menulist = res.data
          console.log(res)
        },
         toggleCollapse(){
        this.isCollapse = !this.isCollapse
    },
    saveNavState(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath = activePath
    }
    }
}
</script>

<style lang="less" scoped>
    .home-container{
        height: 100%;
    }
    .el-header{
        background-color: #373D41;
        display: flex;
        justify-content: space-between;
        padding-left: 0;
        align-items: center;
        color:#fff;
        font-size: 20px;
        > div {
            display: flex;
            align-items: center;
            span {
                margin-left: 15px;
            }
        }
    }
    .el-aside{
        background-color: #333744;
        .el-menu{
            border-right: none;
        }
    }
    .el-main{
        background-color: #eaedf1;
    }
    .iconfont{
        margin-right: 10px;
    }
    .toggle-button{
        background-color: #4A5064;
        font-size: 10px;
        line-height: 24px;
        color: #fff;
        text-align: center;
        letter-spacing: 0.2em;
        cursor: pointer;
    }
</style>